DTC U0074-00: Can System Communication Error (Local Can Between Pcm And TCM): Outline

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DTC U0074:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	CAN system communication error (Local CAN between PCM and TCM)
Detection condition	Malfunction in CAN bus communication line.
Fail-safe	Not applicable
Possible cause	CAN communication line malfunction between PCM and TCM (Local CAN between PCM and TCM) TCM detects DTCs. PCM malfunction TCM malfunction
Courtesy of MAZDA MOTORS CORP.